CN203547838U

CN203547838U - Multi-core resonant type silencer

Info

Publication number: CN203547838U
Application number: CN201320689706.4U
Authority: CN
Inventors: 姜烈芬; 高晨丹; 卜范滨; 关正茂; 韩学
Original assignee: HARBIN AIRUI AUTOMOTIVE EXHAUST SYSTEM CO Ltd
Current assignee: Harbin Airui Emissions Control Technology Co ltd
Priority date: 2013-11-01
Filing date: 2013-11-01
Publication date: 2014-04-16
Anticipated expiration: 2023-11-01

Abstract

The utility model relates to a multi-core resonant type silencer. The multi-core resonant type silencer comprises a shell, a gas-inlet core tube and a gas-outlet core tube. The two ends of the shell are provided with a front end cover and a rear end cover respectively. A first partition plate and a second partition plate are arranged in the shell and divide space in the shell into a first cavity, a second cavity and a third cavity. The gas-inlet core tube sequentially penetrates through the first cavity and the second cavity from the front end cover and then goes deep into the third cavity. A resonance tube is installed in the gas-inlet core tube and is provided with evenly distributed circular holes. The gas-outlet core tube sequentially penetrates through the third cavity and the second cavity from the rear end cover and then goes deep into the first cavity. The first cavity is directly communicated with the third cavity through an intermediate core tube. The part, in the second cavity, of the gas-inlet core tube, the part, in the second cavity, of the gas-outlet core tube and the part, in the second cavity, of the intermediate core tube are respectively provided with evenly distributed circular holes. The second cavity is filled with sound absorption materials. The multi-core resonant type silencer is simple and compact in structure and capable of effectively lowering exhaust noise of an engine by utilizing the resonance silencing and denoising principle and the sound absorption effect of the sound absorption materials.

Description

Multicore resonator muffler

Technical field

The utility model relates to a kind of exhaust silencer, particularly relates to the multicore resonator muffler using in a kind of motor car engine.

Background technique

At present, along with the raising of people's living standard, vehicle also increases thereupon, and vehicle noise discharge is extensively familiar with by people, and national legislation also requires automobile noise to control effectively.Automotive muffler is that the silencing apparatus in engine exhaust pipe is used for consuming flowed energy, reduces the pressure surge amplitude of air-flow, plays the effect of noise decrease for reducing a key components and parts of automobile engine to exhaust noise.But, in existing muffler for motor, air-flow and noise to pass through path consistent, in this case if minimizing noise, with regard to extending the path of propagation of noise, increases the decay of noise, path of propagation increases the pressure loss that will increase air-flow like this, back pressure is increased, and power loss increases, and causes vehicle dynamic quality, Economy to decline; Also can increase the overall overall sizes of silencing apparatus simultaneously.

Summary of the invention

The purpose of this utility model is to overcome the deficiency existing in above-mentioned technology, provide a kind of simple and compact for structure, reasonable in design, cost is moderate, can effectively subdue the multicore resonator muffler of engine exhaust noise.

In order to achieve the above object, the technical solution adopted in the utility model is: comprise cylindrical shell, air inlet core pipe, go out gaseous core pipe, the two ends of housing are respectively equipped with front cover and rear end cover, on front cover, have air inlet core pore, on rear end cover, have out gaseous core pore, the inside of housing is provided with the first dividing plate and the second partition that is parallel to front cover, front cover and the first dividing plate, the first dividing plate and second partition, between second partition and rear end cover, form respectively the first chamber, the second chamber, the 3rd chamber, described air inlet core pipe runs through the first chamber successively by the air inlet core pore of front cover, after the second chamber, go deep into the 3rd chamber, resonantron is arranged on the inside of air inlet core pipe, one end of resonantron arises from second partition, the other end terminates in the end of air inlet core pipe, on the body of described resonantron, have equally distributed circular hole, described go out gaseous core pipe and run through successively the 3rd chamber by the gaseous core pore that goes out of rear end cover, after the second chamber, go deep into the first chamber, the first described chamber and the 3rd chamber are by being directly communicated with the intermediate core pipe of second partition through the first dividing plate, described intermediate core pipe is arranged on air inlet core pipe and goes out between gaseous core pipe, air inlet core pipe, go out on gaseous core pipe and the body of intermediate core pipe in the second chamber and all have equally distributed circular hole, in the second described chamber, be filled with sound-absorbing material.

The utility model has the advantages that:

1, simple and compact for structure, reasonable in design, utilize the sound absorption of resonant silencing denoising principle and sound-absorbing material, the second chamber that can eliminate the first chamber, the 3rd chamber of low-frequency noise and can eliminate high-frequency noise combines, high frequency, the low-frequency noise simultaneously motor the being produced denoising of eliminating the noise, can effectively subdue the exhaust sound of motor in whole speed range, improve the driving comfort of car load, reduce the pollution to environment;

2, the regulating action of multicore makes the back pressure of motor under high rotating speed lower, has guaranteed power character and the Economy of motor, has reduced the impact of high-temperature high-pressure air flow to main muffler simultaneously, has extended the working life of main muffler.

Accompanying drawing explanation

Fig. 1 is the utility model structural representation.

Embodiment

Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.

As shown in Figure 1, the utility model comprises cylindrical shell 5, air inlet core pipe 1, go out gaseous core pipe 16, the two ends of housing 5 are respectively equipped with front cover 3 and rear end cover 11, on front cover 3, have air inlet core pore 2, on rear end cover 11, have out gaseous core pore 10, the inside of housing 5 is provided with the first dividing plate 6 and the second partition 9 that is parallel to front cover 3, front cover 3 and the first dividing plate 6, the first dividing plate 6 and second partition 9, between second partition 9 and rear end cover 11, form respectively the first chamber 15, the second chamber 14, the 3rd chamber 13, described air inlet core pipe 1 runs through the first chamber 15 successively by the air inlet core pore 2 of front cover 3, the second chamber 14 is rear deeply to the 3rd chamber 13, resonantron 12 is arranged on the inside of air inlet core pipe 1, one end of resonantron 12 arises from second partition 9, the other end terminates in the end of air inlet core pipe 1, on the body of described resonantron 12, have equally distributed circular hole 8, described go out gaseous core pipe 16 and run through successively the 3rd chamber 13 by the gaseous core pore 10 that goes out of rear end cover 11, the second chamber 14 is rear deeply to the first chamber 15, the first described chamber 15 and the 3rd chamber 13 are by being directly communicated with the intermediate core pipe 4 of second partition 9 through the first dividing plate 6, described intermediate core pipe 4 is arranged on air inlet core pipe 1 and goes out between gaseous core pipe 16, air inlet core pipe 1, go out on gaseous core pipe 16 and intermediate core pipe 4 body in the second chamber 14 and all have equally distributed circular hole 8, in the second described chamber 14, be filled with sound-absorbing material 7.

Described air inlet core pipe 1, the axis that goes out gaseous core pipe 16 and intermediate core pipe 4 are parallel with the axis of housing 5.

Multicore resonator muffler of the present utility model mainly by cylindrical shell 5, air inlet core pipe 1, go out gaseous core pipe 16, the first dividing plate 6 and second partition 9 and form, the two ends of housing 5 are respectively equipped with front cover 3 and rear end cover 11, the first dividing plates 6 and second partition 9 inner space of housing 5 are divided into the first chamber 15, the second chamber 14 and the 3rd chamber 13.Air inlet core pipe 1 extends to the 3rd chamber 13 always, makes by sound-absorbing material 7, to be absorbed at the second chamber 14 from the high-frequency noise of engine exhaust noise, and the high-frequency noise that is not absorbed part continues propagates down stream lost in the interior generation of the second chamber 14; The low-frequency noise of exhaust sound enters resonantron 12, and wherein part produces resonance by resonantron 12 and air inlet, and another part directly enters the 3rd chamber 13.Intermediate core pipe 4 starts from the first chamber 15, terminate in the 3rd chamber 13, air-flow in the 3rd chamber 13 and a sound wave part enter the first chamber 15 through intermediate core pipe 4, another part enters the second chamber 14 through the circular hole 8 on intermediate core pipe 4 bodys, gas in the second chamber 14 meets with the gas entering from the first chamber 15 by the circular hole 8 going out on gaseous core pipe 16, two-way sound wave produces interferes, the result of interfering further reduces Middle and low frequency noise, finally by the sound-absorbing material 7 in the second chamber 14, by coming from the reproduced air-flow noise producing in the high-frequency noise of motor and silencing apparatus, absorbed, thereby realize the purification silencing to engine exhaust noise, reduce its pollution to environment.

Claims

1. a multicore resonator muffler, comprise cylindrical shell (5), air inlet core pipe (1), go out gaseous core pipe (16), the two ends of housing (5) are respectively equipped with front cover (3) and rear end cover (11), on front cover (3), have air inlet core pore (2), on rear end cover (11), have out gaseous core pore (10), the inside of housing (5) is provided with the first dividing plate (6) and the second partition (9) that is parallel to front cover (3), front cover (3) and the first dividing plate (6), the first dividing plate (6) and second partition (9), between second partition (9) and rear end cover (11), form respectively the first chamber (15), the second chamber (14), the 3rd chamber (13), it is characterized in that: described air inlet core pipe (1) runs through the first chamber (15) successively by the air inlet core pore (2) of front cover (3), after the second chamber (14), go deep into the 3rd chamber (13), resonantron (12) is arranged on the inside of air inlet core pipe (1), one end of resonantron (12) arises from second partition (9), the other end terminates in the end of air inlet core pipe (1), on the body of described resonantron (12), have equally distributed circular hole (8), described go out gaseous core pipe (16) and run through successively the 3rd chamber (13) by the gaseous core pore (10) that goes out of rear end cover (11), after the second chamber (14), go deep into the first chamber (15), described the first chamber (15) and the 3rd chamber (13) are by being directly communicated with the intermediate core pipe (4) of second partition (9) through the first dividing plate (6), described intermediate core pipe (4) is arranged on air inlet core pipe (1) and goes out between gaseous core pipe (16), air inlet core pipe (1), go out on gaseous core pipe (16) and the body of intermediate core pipe (4) in the second chamber (14) and all have equally distributed circular hole (8), in described the second chamber (14), be filled with sound-absorbing material (7).

2. multicore resonator muffler according to claim 1, is characterized in that: described air inlet core pipe (1), the axis that goes out gaseous core pipe (16) and intermediate core pipe (4) are parallel with the axis of housing (5).